The Effects of Osmosis and Thermo-Priming on Salinity Stress Tolerance in Vigna radiata L.

A plant’s response to osmotic stress is a complex phenomenon that causes many abnormal symptoms due limitations in growth and development or even the loss of yield. The current research aimed analyze agronomical, physiological, biochemical mechanisms accompanying acquisition salt resistance Vigna radiata L. variety ‘Ramzan’ using seed osmo- thermopriming presence PEG-4000 4 °C under induced salinity stresses 100 150 mM NaCl. Seeds were collected from CCRI, Nowshera, sowing was undertaken triplicate at Department Botany, Peshawar University, during 2018–2019 growing season. Rhizospheric soil pH (6.0), E.C (2.41 ds/m), field capacity, moisture content level estimated present study. We observed results agronomic characteristics, i.e., shoot fresh weight dry T9 (4oC + NaCl), root T4 (PEG T5 T6 NaCl) highest, followed by lowest T1 (both weights) T2 (shoot weights). Similarly, maximum minimum T6, highest T6. agronomical parameters including masses (T4, T4), leaf area index, germination area, total biomass, vigor index treatment T9, relative water use efficiency highest. Plant physiological traits such as proline, SOD enhanced T1, carotenoids T2, chlorophyll protein levels T4, whereas sugar POD treatments T7 T8. principal component analysis enclosed 63.75% variation among all biological components. These confirmed positive osmopriming (PEG) (4 °C) on most features with great tolerance low-saline (PEG), °C), T8 while it susceptible case high application. found constraining impact several priming techniques improved low salinity, which regarded economically inexpensive initiated numerous metabolic processes plants, hence decreasing time. study will have major applications for combatting problem climate change Pakistan.